CN1384391A - Structure of back lighting module - Google Patents

Structure of back lighting module Download PDF

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Publication number
CN1384391A
CN1384391A CN02117897.6A CN02117897A CN1384391A CN 1384391 A CN1384391 A CN 1384391A CN 02117897 A CN02117897 A CN 02117897A CN 1384391 A CN1384391 A CN 1384391A
Authority
CN
China
Prior art keywords
light
light component
leaded light
back lighting
lighting module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN02117897.6A
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Chinese (zh)
Inventor
王志源
黄国瑞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wintek Corp
Original Assignee
Wintek Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wintek Corp filed Critical Wintek Corp
Priority to CN02117897.6A priority Critical patent/CN1384391A/en
Priority to US10/191,566 priority patent/US6752507B2/en
Publication of CN1384391A publication Critical patent/CN1384391A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0065—Manufacturing aspects; Material aspects
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0026—Wavelength selective element, sheet or layer, e.g. filter or grating
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Liquid Crystal (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The structure of back lighting module includes a lihgt guiding assembly made of transparent base material and an optical converting layer on the outgoing surface of the light guiding assembly. The light guiding assembly has one outgoing surface with microstructures in its top, one light guiding surface in its bottom, one incident surface on its side and one light source beside the incident surface. The optical converting layer consists of solid light-emitting powder material, polymer adhesive and transparent base material. The back lighting module can change back lighting color, raise brightness of display and deflect light to required direction to increase brightness.

Description

Structure of back lighting module
Technical field
The present invention relates to a kind of structure of back lighting module, refer to that especially a kind of leaded light component is provided with the optical transition layer, and dye the backlight modular structure that predetermined color is arranged and have the luminous material of light in the optical transition layer.
Background technology
As shown in Figure 8, the existing light guide module 90 that is applied to LCD, be used as light source 91 with LED (light emitting diode) or CCFL (cold cathode ray tube), the backlight leaded light that is applied to electronic product (as mobile phone) display is technical, with pointolite or line source emitted light, in conjunction with diffusion layer 94, be provided with brightness enhancement layer 95 on the process exiting surface 922 of leaded light component 92 in diffusion layer 94.Because, the light guiding surface 921 of leaded light component 92 can be with pointolite or line source with the reflection horizon 96 of its bottom, convert to by the area source of exiting surface 922 bright dippings to Liquid Crystal Module 97, and make light arrive diffusion layer 94 uniform lights, arrive brightness enhancement layer 95 then, and make Liquid Crystal Module 97 can demonstrate the backlight of predetermined color.
Prior art, the backlight color of general LCD depends on that color that light source 91 sent is as desiring the demonstration blue light backlight of LCD, then need use blue light source 91, and if desire to make the orange light of demonstration backlight of LCD, then need use orange light source 91, so the electronic product of using this kind technology needs to use multiple different colored light sources 91 usually in order to have the backlight color of multiple difference.
And backlight at the colorize LCD, usually wishing backlight is white light, can enough have preferable brightness, is so considering that the white light source price is higher, and when selecting light source colour for light sources such as blue, green, orange, redness to reduce cost, just need the optics look to convert white light to.
In addition, the leaded light component 92 of the known light guide module 90 of this kind is on exiting surface 922, the microstructure 923 that only has simple appearance, promptly in order to cooperate the technology when making, make the reflecting surface 924 of microstructure 923 and the angle γ excessive (as shown in Figure 9) of exiting surface 92, so will make from difficult the concentrating of the light of light source 91 and reflex to reflecting plate 96, the light that so will make reflecting plate 96 reflex to Liquid Crystal Module 97 reduces, and the brightness that shows is also reduced.
Summary of the invention
Fundamental purpose of the present invention provides a kind ofly can change Show Color backlight, allow overall brightness improve and make display module reach the structure of back lighting module of brightening effect.
Another object of the present invention is to provide a kind of makes light that light source sends be allowed light at reflex time by the leaded light component predetermined direction that leads, and can not form the reflection of improper and deflection, concentrates light conducting direction, shows the structure of back lighting module of briliancy with increase.
For achieving the above object, the present invention takes following design proposal: a kind of structure of back lighting module, it has a leaded light component made from transmitting substrate, the top of this leaded light component has an exiting surface, it is characterized in that: this exiting surface has most microstructures, and in addition, the bottom of this leaded light component has a light guiding surface, this leaded light component has an incidence surface in a side again, and this leaded light component is provided with a light source in one of this incidence surface side; In addition, this leaded light component is folded on exiting surface to be provided with an optical transition layer, and this optical transition layer is formed by a solid powder material and a macromolecule adhesive, a transmitting substrate, and wherein this solid powder material is made up of a smooth luminescent material at least.
This microstructure has this exiting surface salient point farthest, and this microstructure tilts to extend from this salient point towards periphery, and each tangent line on the microstructure lateral surface is neither parallel to each other, this salient point one side forms a steeper steep face, one of this steep face side then forms a mild slow face relatively, the tangent line of this steep face and the angle of exiting surface are one first angle, and the angle of slow face tangent line and light guiding surface is one second angle, this second angle is greater than first angle, and each tangent line on the microstructure lateral surface is neither parallel to each other.
Advantage of the present invention is: 1, tool optics look rotating function: because of leaded light component is provided with the optical transition layer, have most light luminescent materials in the optical transition layer, can absorb backlight and then convert the light of particular optical color to, reach the purpose of optic metachromatic.2, tool brightening effect: because leaded light component is provided with the optical transition layer, blending or be combined with the luminous material of most light in the optical transition layer can increase the briliancy of vertical direction light, and allow overall brightness improve, and can make display module reach brightening effect.
Description of drawings
Fig. 1 is the present invention's embodiment perspective view
The schematic perspective view that Fig. 2 advances for embodiment of the invention light
Fig. 3 is the side view of the embodiment of the invention
Fig. 4 is that the light of the embodiment of the invention is in the synoptic diagram of microstructure reflection
Fig. 5 carries out the light variable color for embodiment of the invention internal light in the optical transition layer synoptic diagram
Fig. 6 carries out the light blast for embodiment of the invention extraneous light in brightness enhancement layer synoptic diagram
Fig. 7 be among Fig. 6 light in the enlarged diagram of color converting layer variable color and blast
Fig. 8 is for commonly using the structural representation of leaded light component in conjunction with diffusion barrier and variable color film
Fig. 9 is for commonly using the synoptic diagram that makes light reflection, variable color and diffusion of leaded light component
Embodiment
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the present invention's backlight module is located on the LCD 1 of backlight, this LCD 1 has a Liquid Crystal Module 10, the bottom of this Liquid Crystal Module 10 promptly is provided with this backlight module, this backlight module has the leaded light component 20 of being located at these Liquid Crystal Module 10 bottoms and making with transmitting substrate, the top of this leaded light component 20 has an exiting surface 21, this exiting surface 21 has most microstructures 211, this microstructure 211 has this exiting surface 21 salient point 212 farthest, and this microstructure 211 tilts to extend from this salient point 212 towards periphery, and each tangent line on microstructure 211 lateral surfaces is neither parallel to each other, these salient point 212 1 sides form a steeper steep face 213, one of this steep face 213 side then forms a mild slow face 214 relatively, the angle of the tangent line of this steep face 213 and exiting surface 21 is an angle α, and the angle of slow face 214 tangent lines and light guiding surface 21 is an angle β, this angle β is greater than angle α, and each tangent line on microstructure 211 lateral surfaces is neither parallel to each other.In addition, the bottom of this leaded light component 20 has the light guiding surface 22 of an inclination, so that these leaded light component 20 thickness form a thick end 23 and a thin end 24 according to the heeling condition of this light guiding surface 22, and the bottom of this light guiding surface 22 is provided with a reflection horizon 25, this leaded light component 20 has an incidence surface 26 in the side of this thick end 23 again, this leaded light component 20 is provided with a light source 30 (the present invention's light source can be the LED or the CCFL of particular color) in this incidence surface 26 away from one of this thin end 24 side, and this light source 30 is provided with the catoptron 31 of an arc away from leaded light component 20 1 sides; In addition, this leaded light component 20 is the folded optical transition layer 40 that is provided with on exiting surface 21, this optical transition layer 40 is formed by a solid powder material 41 and a macromolecule adhesive 42, a transmitting substrate 43, wherein this solid powder material 41 is formed with luminous material 411 of a light and an optics powder 412 mixing, and this optics powder 412 can be acryl powder or TiO 2, SiO 2, BaTiO 3Deng, its concentration is 10～50% percentage by weights; In addition, this macromolecule adhesive 42 can be epoxy resin, polyamide resin, acryl resin, vibrin, polyether resin, halogen-containing resin, rubber, contains macromolecule resins such as silicones, celluosic resin, its concentration 20～90% percentage by weights.Secondly, this transmitting substrate 43 is that a mist degree is that zero (transparency 100%) above material is made.
It should be noted that: the slow face 214 that these exiting surface 21 most microstructures 211 have, make the radian of microstructure 211 lateral surfaces one side become big, promptly utilize the characteristic of slow face 214 angle β less than prior art leaded light component 77 end face angle γ, the light guiding predetermined direction that the present invention's leaded light component 6 can be sent light source 82, and the problem that the light that light source described in prior art can not take place is not easy to concentrate, the briliancy in the time of also can increasing Liquid Crystal Module 10 demonstrations by this.
In addition, this optical transition layer 40 mixes macromolecule adhesive 42 to be bonding on this transmitting substrate 43 with solid powder material 41, and with the luminous material 411 of light in this solid powder material 42 have can absorb and again conversion send the light of a particular optical Wavelength distribution, make that this light source 30 is able to directly pass through in some when this optical transition layer 40, and wherein some is promptly absorbed by this light luminescent material 411, and discharge with the light form of a particular optical Wavelength distribution, promptly be convertible into another kind of color, promptly the color with light source is different so can to make the color that this Liquid Crystal Module 10 demonstrates.Since this light luminescent material 411 the energy that absorbs luminous energy and discharge a particular optical Wavelength distribution, have the briliancy of increasing effect, the briliancy in the time of so also must increasing Liquid Crystal Module 10 demonstrations.
In addition, cooperate the XYZ chromaticity diagram analysis of annex one,, then must cooperate the optical transition layer 40 of redness if it is backlight to desire to make the light source 30 of tool blue light to demonstrate purple in this LCD; In like manner as can be known, if desire to make the light source 30 of tool blue light in this LCD, to demonstrate white backlight, then must cooperate orange optical transition layer 40.
As shown in Figure 2, the present invention can be applicable on the leaded light component 20 of electronic products such as mobile phone screen or PDA screen, in the use, the light X that this light source 30 (present embodiment is an example with the LED of blueness) is dispersed can or reflex to the incidence surface 26 of this leaded light component 20 via direct projection through catoptron 31, make light X be reflected or be directed to this exiting surface 21, before light X penetrates leaded light component 21 by exiting surface 21, this light X becomes the variable color light Y (variable color light of white through optical transition layer 40 (present embodiment is example with orange) earlier, and cooperate shown in Figure 5), this light X is a part of and absorbed by the luminous material 411 of this light in this optical transition layer 40 simultaneously, and discharge the energy of a particular optical Wavelength distribution, and make this variable color light Y at this through blast for the first time; This variable color light Y is in passing this optics powder 412 in addition, the uneven surface (not shown) portion on these optics powder 412 surfaces can make variable color light Y form the optically focused effect (as shown in Figure 7, optically focused effect as convex lens), in the i.e. quilt blast for the second time of this variable color light Y, and variable color light Y passes this Liquid Crystal Module 10 again, make this LCD 1 can demonstrate the backlight of variable color, because the optically focused effect can make light have brightening effect, so shown go out backlight of LCD has preferable brightness.
Following table promptly is light source 30 process backlight module and the look conversion film of the present invention's actual product with single LED, and driving voltage is 3.5V, can carry out 3～4 times of look conversion and blasts, and the comparison sheet of its briliancy and colourity is as follows.
Real product example Explanation Briliancy The cie color coordinate
??cd/m 2 ????x ????y
Reference examples A Single blue led backlight module ??8.27 ????0.134 ????0.079
The routine A one of real product Add self-control optical transition layer 10 ??23.4 ????0.222 ????0.212
The routine A two of real product Add self-control optical transition layer 20 ??27.8 ????0.283 ????0.288
The routine A three of real product Add self-control optical transition layer 30 ??30.2 ????0.294 ????0.299
The routine A four of real product Add self-control optical transition layer 40 ??32.2 ????0.357 ????0.361
Following table promptly is light source 30 process backlight module and the look conversion film of the present invention's actual product with three LEDs, and driving voltage is 3.5V, can carry out 8～11 times of look conversion and blasts, and the comparison sheet of its briliancy and colourity is as follows.
Real product example Explanation Briliancy The cie color coordinate
??cd/m 2 ????x ????y
Reference examples B Three blue led backlight modules ??21.4 ??0.133 ??0.067
The routine B one of real product Add self-control optical transition layer 10 ??171 ??0.276 ??0.283
The routine B two of real product Add self-control optical transition layer 20 ??216 ??0.320 ??0.323
The routine B three of real product Add self-control optical transition layer 30 ??198 ??0.316 ??0.325
The routine B four of real product Add self-control optical transition layer 40 ??247 ??0.397 ??0.384
In addition, this LCD 1 external light source (as sunshine or lighting) the light Z of formation, pass this Liquid Crystal Module 10, and arrive the optics powder 412 of this leaded light component 21, this light Z and more than most optics powders 412 surfaces the number protuberances scatter reflections, but and form the at random smooth V (as shown in Figure 7) of this Liquid Crystal Module 10 of reflected back, to increase the briliancy and the uniformity coefficient of LCD MODULE 10 demonstrations.
Comprehensively above-mentioned, the present invention's leaded light component 21 not only makes the light of light source 30 generations be able to variable color with optical transition layer 40 and increases brightness, and according to the difference of light source 30 and optical transition layer 40 color, backlight color with the more differences of conversion, and the light of external light source is carried out scattering and reflection with the uneven surface of optics powder 412, the light of internal light source 30 is then had an optically focused effect, to increase the briliancy and the uniformity coefficient of LCD 1 demonstration, make LCD 1 simultaneously in tool colour change function backlight, also can increase briliancy backlight, the brightness of demonstration can not reduced, but use the apparent brightness that increases display.
The present invention has good optical color transforming function, and the light color that cooperates light emitting source to send, can reach required display color, and the present invention then increases the brightening effect of optics with the optical transition layer, structurally, can save the use cost of diffusion barrier and color conversion film really, therefore, collocation is applied on mobile phone, PDA and other product on back lighting device, can develop the product with commercial value.
Annex one: XYZ chromaticity diagram.

Claims (6)

1, a kind of structure of back lighting module, it has a leaded light component made from transmitting substrate, the top of this leaded light component has an exiting surface, it is characterized in that: this exiting surface has most microstructures, in addition, the bottom of this leaded light component has a light guiding surface, and this leaded light component has an incidence surface in a side again, and this leaded light component is provided with a light source in one of this incidence surface side; In addition, this leaded light component is folded on exiting surface to be provided with an optical transition layer, and this optical transition layer is formed by a solid powder material and a macromolecule adhesive, a transmitting substrate, and this solid powder material is made up of a smooth luminescent material at least in the tool.
2, the structure of back lighting module according to claim 1, it is characterized in that: this microstructure has this exiting surface salient point farthest, and this microstructure tilts to extend from this salient point towards periphery, and each tangent line on the microstructure lateral surface is neither parallel to each other, this salient point one side forms a steeper steep face, one of this steep face side then forms a mild slow face relatively, the tangent line of this steep face and the angle of exiting surface are one first angle, and the angle of slow face tangent line and light guiding surface is one second angle, this second angle is greater than first angle, and each tangent line on the microstructure lateral surface is neither parallel to each other.
3, the structure of back lighting module according to claim 1, it is characterized in that: the light guiding surface of this leaded light component bottom is skewed, so that this leaded light component thickness is according to the heeling condition of this light guiding surface and form a thick end and a thin end.
4, the structure of back lighting module according to claim 1, it is characterized in that: this light source is provided with the catoptron of an arc away from leaded light component one side.
5, the structure of back lighting module according to claim 1, it is characterized in that: this macromolecule adhesive is epoxy resin, polyamide resin, acryl resin, vibrin, polyether resin, halogen-containing resin, rubber, contain macromolecule resins such as silicones, celluosic resin one of them, its concentration 20～90% percentage by weights.
6, the structure of back lighting module according to claim 1, it is characterized in that: this solid powder material more comprises an optics powder, this optics powder is acryl powder, TiO 2, SiO 2, BaTiO 3Wait one of them person, its concentration is 10～50% percentage by weights.
CN02117897.6A 2002-05-27 2002-05-27 Structure of back lighting module Pending CN1384391A (en)

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CN02117897.6A CN1384391A (en) 2002-05-27 2002-05-27 Structure of back lighting module
US10/191,566 US6752507B2 (en) 2002-05-27 2002-07-10 Backlight module structure

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CN02117897.6A CN1384391A (en) 2002-05-27 2002-05-27 Structure of back lighting module
US10/191,566 US6752507B2 (en) 2002-05-27 2002-07-10 Backlight module structure

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100440299C (en) * 2003-11-28 2008-12-03 Nec显示器解决方案株式会社 Image display apparatus
WO2012027977A1 (en) * 2010-09-02 2012-03-08 Wu Mingfan Illuminating device with led surface light source covered by optical film
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CN103591551A (en) * 2013-05-27 2014-02-19 瑞仪光电股份有限公司 Light guide device and lighting equipment
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US10139545B2 (en) 2015-04-02 2018-11-27 E Ink Holdings Inc. Front light display device and manufacturing thereof
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Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI275842B (en) * 2002-12-20 2007-03-11 Hon Hai Prec Ind Co Ltd Light guide plate and method of making the same
TW200523503A (en) * 2003-09-29 2005-07-16 Sony Corp Backlight, light guiding plate, method for manufacturing diffusion plate and light guiding plate, and liquid crystal display device
TWI287126B (en) * 2004-03-09 2007-09-21 Hon Hai Prec Ind Co Ltd Backlight module for LCD
US8324640B2 (en) * 2004-07-02 2012-12-04 GE Lighting Solutions, LLC LED-based edge lit illumination system
CN100561660C (en) * 2004-12-22 2009-11-18 鸿富锦精密工业（深圳）有限公司 A kind of field emission light source and use the module backlight of this light source
JP2006351217A (en) * 2005-06-13 2006-12-28 Seiko Epson Corp Manufacturing method of backlight unit, backlight unit, electro-optical device, and electronic apparatus
KR101201306B1 (en) * 2005-06-29 2012-11-14 엘지디스플레이 주식회사 Back light unit
US7513669B2 (en) * 2005-08-01 2009-04-07 Avago Technologies General Ip (Singapore) Pte. Ltd. Light source for LCD back-lit displays
US7641350B2 (en) * 2005-11-28 2010-01-05 Jds Uniphase Corporation Front surface mirror for providing white color uniformity for polarized systems with a large range of incidence angles
TWI273285B (en) * 2005-12-23 2007-02-11 Wintek Corp Color filter having capability of changing light-color
US20080024870A1 (en) * 2006-07-27 2008-01-31 Bourdelais Robert P Light-redirecting film containing optical modification layer
KR101423456B1 (en) * 2006-12-28 2014-07-29 서울반도체 주식회사 Back lighting unit having phosphor film structure
US7530726B2 (en) * 2007-03-06 2009-05-12 Skc Haas Display Films Co., Ltd. Light redirecting film having discontinuous coating
US7780330B2 (en) * 2007-05-16 2010-08-24 Rohm And Haas Electronics Materials Llc Elongated illuminators configuration for LCD displays
US7717601B2 (en) * 2007-09-28 2010-05-18 Dell Products Lp Systems and methods for compensating brightness uniformity of backlit image displays
US7915627B2 (en) * 2007-10-17 2011-03-29 Intematix Corporation Light emitting device with phosphor wavelength conversion
CN101463971B (en) * 2007-12-18 2010-11-10 富士迈半导体精密工业（上海）有限公司 Illuminating apparatus
EP2252828A1 (en) * 2008-02-22 2010-11-24 3M Innovative Properties Company Backlights having selected output light flux distributions and display systems using same
US8408775B1 (en) * 2008-03-12 2013-04-02 Fusion Optix, Inc. Light recycling directional control element and light emitting device using the same
US7493010B1 (en) 2008-03-20 2009-02-17 Emerging Display Technologies Co., Ltd. Stepped light guide
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US8651692B2 (en) * 2009-06-18 2014-02-18 Intematix Corporation LED based lamp and light emitting signage
US20110205756A1 (en) * 2010-02-19 2011-08-25 Pixtronix, Inc. Light guides and backlight systems incorporating prismatic structures and light redirectors
JP2011249316A (en) * 2010-03-30 2011-12-08 Mitsubishi Chemicals Corp Light-emitting device
IN2014CN04750A (en) * 2011-12-16 2015-09-18 Koninkl Philips Nv
TWI494660B (en) * 2013-01-08 2015-08-01 Unity Opto Technology Co Ltd Side light type backlight module
TWI507636B (en) 2013-05-27 2015-11-11 Radiant Opto Electronics Corp Lighting device
JP6566313B2 (en) * 2015-03-13 2019-08-28 パナソニックＩｐマネジメント株式会社 Display device and light emitting device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4345308A (en) * 1978-08-25 1982-08-17 General Instrument Corporation Alpha-numeric display array and method of manufacture
US4640592A (en) * 1983-01-22 1987-02-03 Canon Kabushiki Kaisha Optical display utilizing thermally formed bubble in a liquid core waveguide

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CN102454939A (en) * 2010-10-30 2012-05-16 东莞市松毅电子有限公司 Lens group with homogenized light in area light source
CN103591551A (en) * 2013-05-27 2014-02-19 瑞仪光电股份有限公司 Light guide device and lighting equipment
CN103591551B (en) * 2013-05-27 2016-11-02 瑞仪光电股份有限公司 Guiding device and luminaire
CN106247282A (en) * 2013-05-27 2016-12-21 瑞仪光电股份有限公司 Luminaire
CN104549956A (en) * 2013-10-17 2015-04-29 胜华科技股份有限公司 Light curing device
CN106200196A (en) * 2015-04-02 2016-12-07 元太科技工业股份有限公司 Front electro-optical display device and preparation method thereof
US10139545B2 (en) 2015-04-02 2018-11-27 E Ink Holdings Inc. Front light display device and manufacturing thereof
CN110094647A (en) * 2018-01-29 2019-08-06 深圳市绎立锐光科技开发有限公司 A kind of Wavelength converter, luminescence component and lighting device

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